docs: def store(self, stream, linesep=None):
          """
          Serialize the Manifest to a binary stream
          """
  
          # either specified here, specified on the instance, or the OS
          # default
          linesep = linesep or self.linesep or os.linesep
  
          ManifestSection.store(self, stream, linesep)
          for sect in sorted(self.sub_sections.values()):
              sect.store(stream, linesep)